Hello, I have a truck with a Grote brake, turn and back up. This was damaged and I have to replace it. The thing is, it has a connection for a Bestar back up alarm. It looks like the connection for the wire harness except it only has a total of two prongs. The numbers I see on it are 5371 on the side, and 5380-70 on the top. I’ve been on your site and others with no luck in locating it. Is there a new number for it? Is this item still available?